mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
736b1c9c95
The two device tree files octeon_3xxx.dts and octeon_68xx.dts are trimmed by code in a subsequent patch to reflect the hardware actually present on the board. To this end several properties that are not part of the declared bindings are added to aid in trimming off unwanted nodes. Since the device tree and the code that trims it are bound into the kernel binary, these 'marker' properties never escape into the wild, and are purely an implementation detail of the kernel early boot process. This is done for backwards compatibility with existing boards (identified by a board type enumeration value by their bootloaders). New boards will always pass a device tree from the bootloader, the built-in trees are ignored in this case. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: devicetree-discuss@lists.ozlabs.org Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: linux-kernel@vger.kernel.org Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/3937/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
28 lines
769 B
Plaintext
28 lines
769 B
Plaintext
* Central Interrupt Unit
|
|
|
|
Properties:
|
|
- compatible: "cavium,octeon-6880-ciu2"
|
|
|
|
Compatibility with 68XX SOCs.
|
|
|
|
- interrupt-controller: This is an interrupt controller.
|
|
|
|
- reg: The base address of the CIU's register bank.
|
|
|
|
- #interrupt-cells: Must be <2>. The first cell is the bank within
|
|
the CIU and may have a value between 0 and 63. The second cell is
|
|
the bit within the bank and may also have a value between 0 and 63.
|
|
|
|
Example:
|
|
interrupt-controller@1070100000000 {
|
|
compatible = "cavium,octeon-6880-ciu2";
|
|
interrupt-controller;
|
|
/* Interrupts are specified by two parts:
|
|
* 1) Controller register (0..63)
|
|
* 2) Bit within the register (0..63)
|
|
*/
|
|
#address-cells = <0>;
|
|
#interrupt-cells = <2>;
|
|
reg = <0x10701 0x00000000 0x0 0x4000000>;
|
|
};
|